Newbie and Newbie question on 2008 Sea Doo 130hp GTI

Looking at purchasing a 2008 Sea Doo 130hp GTI. I have never owned a PWC. Found this one and it has 160hrs on it and the seller is asking $4500. Looks to be in good condition.

Questions:
1. Is this a fair asking price?
2. How many hours on this engine can a person get before a top end rebuild?
3. How much (on average) does a top end rebuild cost on a model like this?
4. How many hours on this engine can a person get before bottom end rebuild?
5. What other major parts on this machine will need to be rebuilt and at what hour interval?

I am trying to make a informed and smart decision before I purchase a previously owned PWC.

you could easily get 1000+ hours out of that as long its well maintained with no issues, Since its not super charged, There some people and rentals with 2500hr a replacement refurb drop in ready engine is around $2700 plus install